"In development" means nothing. Something like 90% or more of the movies Hollywood considers making never get made due to lack of getting financial packages together, etc. or the producer going with a more likely property. In my career as a writer, I've sold six options for movies to Hollywood producers. Some of them reached the "in development" stage but were never made. I have friends who have sold scores of options, never to see the final movie. But I'm not complaining, we gets to KEEP the option money .

When a movie is described as "in production," THEN you can get excited.

Take a gander also, if you will at such 'faithful' filmatizations as "Starship Troopers" and "I, Robot"... Robert Heinlein and Isaac Asimov would be loading their guns and going after the screenwriters, were they still alive...